/*

* Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  CCamSnapshot class definition

*

*/

#ifndef CAM_SNAPSHOT_H

#define CAM_SNAPSHOT_H

#include <e32base.h>

#include <ecam.h>

#include "mcamcameraobserver.h" // MCamCameraObserver, MCamCameraObservable

#include "camimagedecoder.h"    // MCamImageDecoderObserver

#include "cambitmapscaler.h"    // MCamBitmapScalerObserver

class CCamBufferShare;

/**

* @class CCamSnapshot

*

*/

class CCamSnapshot : public CBase,

//                     public MCameraSnapshot,

                     public MCamCameraObserver,

                     public MCamImageDecoderObserver,

                     public MCamBitmapScalerObserver

  {

  // -------------------------------------------------------

  // Constructors and destructor

  public:

    static CCamSnapshot* NewL( CCamera&              aCamera, 

                               MCameraObserver2&     aObserver,

                               MCamCameraObservable& aObservable );

    ~CCamSnapshot();

  // -------------------------------------------------------

  // from MCameraSnapshot

  public:

    TUint32 SupportedFormats();

    void PrepareSnapshotL( CCamera::TFormat aFormat, const TPoint& aPosition, const TSize& aSize, const TRgb& aBgColor, TBool aMaintainAspectRatio);

    void PrepareSnapshotL( CCamera::TFormat aFormat, const TSize& aSize, TBool aMaintainAspectRatio );

    void SetBgColorL( const TRgb& aBgColor ); 

    void SetPositionL( const TPoint& aPosition );

    TBool IsSnapshotActive() const;

    void StartSnapshot();

    void StopSnapshot();

    MCameraBuffer& SnapshotDataL( RArray<TInt>& aFrameIndexOrder );

  // -------------------------------------------------------

  // From MCamCameraObserver

  public:

    /**

    * @see MCamCameraObserver

    */

    virtual void HandleCameraEventL( TInt              aStatus, 

                                     TCamCameraEventId aEventId, 

                                     TAny*             aEventData = NULL );

  // -------------------------------------------------------

  // from MCamImageDecoderObserver

  public:

    /**

    * @see MCamImageDecoderObserver

    */

    virtual void ImageDecodedL( TInt aStatus, const CFbsBitmap* aBitmap, const CFbsBitmap* aMask );

  // -------------------------------------------------------

  // from MCamBitmapScalerObserver

  public:

    /**

    * @see MCamBitmapScalerObserver

    */

    virtual void BitmapScaled( TInt aStatus, const CFbsBitmap* aBitmap );

  // -------------------------------------------------------

  // New methods

  public:

    void StartSnapshotProcessing( CCamBufferShare* aBuffer,

                                  TInt             aError );

    static TInt SnapshotReadyCallback( TAny* aSelf );

  private:

    void DoStartSnapshotProcessingL( CCamBufferShare* aBuffer,

                                     TInt             aError );

    TDisplayMode Format2DisplayMode( CCamera::TFormat aFormat ) const;

    void SetImageData( CCamBufferShare* aImageData );

  private:

    void ConstructL();

    CCamSnapshot( CCamera&              aCamera, 

                  MCameraObserver2&     aObserver,

                  MCamCameraObservable& aObservable );

  // =======================================================

  // data

  private:

    MCameraObserver2&     iObserver;

    MCamCameraObservable& iObservable;

    TInt                  iCameraHandle;

    CCamImageDecoder*     iDecoder;

    CCamBitmapScaler*     iScaler;

    CCamBufferShare*      iImageData;

    CFbsBitmap*           iSnapshotBitmap;    

    TBool                 iSnapshotOn;

    TInt                  iStatus;

    // Video snapshot is taken from VF frames.

    // Flags to control the process.

    TBool                 iUseNextVfFrame;

    TBool                 iVideoMode;

    CCamera::TFormat      iFormat;

    TPoint                iPosition;

    TSize                 iSize;

    TRgb                  iBackgroundColor;

    TBool                 iMaintainAspectRatio;

    CIdle*                iIdle;

  // =======================================================

  };

#endif

// end of file